From 79eb597cba06c435b72f220e9d426ae413fc2579 Mon Sep 17 00:00:00 2001 From: Daniel Jordan Date: Tue, 16 Jul 2019 16:30:54 -0700 Subject: mm: add account_locked_vm utility function locked_vm accounting is done roughly the same way in five places, so unify them in a helper. Include the helper's caller in the debug print to distinguish between callsites. Error codes stay the same, so user-visible behavior does too. The one exception is that the -EPERM case in tce_account_locked_vm is removed because Alexey has never seen it triggered. [daniel.m.jordan@oracle.com: v3] Link: http://lkml.kernel.org/r/20190529205019.20927-1-daniel.m.jordan@oracle.com [sfr@canb.auug.org.au: fix mm/util.c] Link: http://lkml.kernel.org/r/20190524175045.26897-1-daniel.m.jordan@oracle.com Signed-off-by: Daniel Jordan Signed-off-by: Stephen Rothwell Tested-by: Alexey Kardashevskiy Acked-by: Alex Williamson Cc: Alan Tull Cc: Alex Williamson Cc: Benjamin Herrenschmidt Cc: Christoph Lameter Cc: Christophe Leroy Cc: Davidlohr Bueso Cc: Jason Gunthorpe Cc: Mark Rutland Cc: Michael Ellerman Cc: Moritz Fischer Cc: Paul Mackerras Cc: Steve Sistare Cc: Wu Hao Cc: Ira Weiny Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index f43f4de4de68..bd6512559bed 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1543,6 +1543,10 @@ long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages, int get_user_pages_fast(unsigned long start, int nr_pages, unsigned int gup_flags, struct page **pages); +int account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc); +int __account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc, + struct task_struct *task, bool bypass_rlim); + /* Container for pinned pfns / pages */ struct frame_vector { unsigned int nr_allocated; /* Number of frames we have space for */ -- cgit v1.2.3